Crash Zone. Gotta keep people safe from getting too close to the Aurora, it isn't very structurally sound.

Sorry for the late post but there’s a lot of places you forgot and other facts.

#1 The Cave Crawler is an aggressive fauna species that can be found on the Aurora, in the Underwater Islands, on the Mountain Island, and in the Dunes, and in game it never mentions anyone going to the dunes or under water islands, meaning this is the first fact that breaks this theory.

Yes

And blood crawlers, An agile, territorial scavenger that moves in packs across the sea bed. Closely related to the amphibious cave crawler, but adapted to deep sea conditions.

ADAPTED is the key word because evolution takes hundreds of years to under go and can be a thousand year process, and people just arrived there…

True true..

Also

Where were u all this time

Playing slime rancher, mine craft, terraria, Pokémon nuzlockes, virtual reality, all of that stuff but the main reason was from playing VR

Ok

@Mavo7w buddy, WRECKS! Also, The mountain had the precursors. I said humanoids, not humans.

Yes but that would mean Spoilers

Alans home planet would be infested with cave crawlers

No, not if when the disease spread, they went into the rubix cubes. Also, we never see the surface of the planet, clouds block it.